Since 2007, the Royal Danish Library has operated Tidsskrift.dk, the Danish National Open Access Platform. Tidsskrift.dk has made it possible for both existing and new journals to publish online. The development of the server, services, and the present status of this platform will be described. The author argues that publishing on OJS-servers has given access to more scientific articles. However, open access has created financial problems for some of the Danish journals. These financial issues make platforms like Tidsskrift.dk a necessary part of the scientific infrastructure in order to facilitate open access.